Proceedings of the Korean Institute of Electrical and Electronic Material Engineers Conference (한국전기전자재료학회:학술대회논문집)
- 2005.07a
- /
- Pages.23-25
- /
- 2005
Design of Readout IC for Uncooled Infrared Bolometer Sensor using Bias Offset Correction Technique
오프셋 보정 기술을 이용한 비냉각형 적외선 센서용 신호검출 회로 설계
- Park, Sang-Won (Dpt. of Electrical Engineering, Korea univ.) ;
- Hwang, Sang-Joon (Dpt. of Electrical Engineering, Korea univ.) ;
- Hong, Seung-Woo (Dpt. of Electrical Engineering, Korea univ.) ;
-
Jung, Eun-Sik
(OCAS Corp. co. Ltd)
;
- Sung, Man-Young (Dpt. of Electrical Engineering, Korea univ.)
- Published : 2005.07.07
Abstract
Infrared bolometer sensor's variation is detected by voltage drop between reference resistor and bolometer resistor in this architecture. One of the serious problems in this architecture is that these resistors value has a process variation. So common-mode level could be different from expectation in room temperature. Different common-mode level could lead to wrong output at the end of readout circuit. We suggest useful method to solve this problem. Difference correction using capacitor has reduced CM level difference to 86% for 1